Lens assembly



Sept. 26, 1933. c. A. MICHEL 1,928,112

LENS ASSEMBLY Filed Dec. 21. 1929 &

Qwwntoo Patented Sept. 1933 L UNIT ". .'."corporati0n of Delaware LENsAss M Y- I l p a QlarenceA. Michel, Lakewood-"Ohio, assignor,to v Guidem Corporation, 'Anderson 'lnd a H Application-December 192 9Serial'NoAlSflZfl I I This invention relatesg ener'ally to" lamps andmore partic'ularly to an automobile headlight I lamp.v r

Theobject of the invention i's the improve-g ment of thestructure oftheglass door' or lens and the manner of seo'uring'itto the reflector andlamp housing. With this object in view, the

invention consists essentially in constructing the glass door or lens of"such diameter that it extends beyond the usual packing'r'ing' or gasketand providing such extended portion withan annular flange adaptedto bereceived am-an annular offset portion formed in the open end of the'lamphousing. The lens so form'edds secured to the lamp housing by merely theuse of two or more screwsin contrast to-the usual mannerof employingclampingrin'gs. :T

An additional feature of my invention consists in the-provisionof'suitable means to con parts of the end of the lamp-housing, which inone embodiment comprises the mirroring ofthe inside surface of the lensadjacent the-edges thereof, or'the use of a piece of thin metal on saidsurface, and in another embodiment comprises a metal covering over theedges of the lens which serves additionally to conceal the attachingscrews. v

It will be readily seen that the manner of at- Figure 2 is a similarview showing amodifica- 'tion of the concealing means employed.

body and the attaching means for securing the same to the lamp housingare similarly formed. Referring then toboth such figures, there is showna lamp housing 1 provided with a reflector housing or formed separatelytherefrom and positioned with respect thereto by any suitable means.Preferably the reflector 2 is formed as a separate element, and theattaching means for securing the lens to the lamp housing servesaddiceal the packing ring or gasket and adjacent H surface-thereof beingangular and the outer sur-' taching the lens to the reflector or lamphousing In Figures 1 and 2, the glass door or lens' 2, which may be anintegral part of the lamp mommy to hold the reflector inbn with respect'to said housing,i"the' reflectorfbeing intere mediat'elypositionedjbetween the lens and nous-- ing. The reflector'is providedwith an"outwardly 1 extending annularflange'which is' formed with anannular recessor groove 3 in which seats the packing ringer-gasket 4;ofanysuitable material.

As shown; in: the drawing; the? bottom wall of V this groove is adaptedto be positioned in abut-i ting relationto an inwardly extending flange.5 formed on the lamp housing. The-glassgdoorf-or lens :6 is" adapted torestup'on the packing .ring .or-jgasket 4 and be tightly drawn intoengage- -'fn'ent therewith by. suitable means to bedescribed'fully-hereafter." i

The glass door or lens-(i is-provided with a central portion which maybeeither clear glass or forni'edfvrith special diffusing surfaces' Theedge l'iof this central portion is providedgwith'fa. rini' fportionhaving an annularflange' flthe inner facesubstantially-bulged outwardlyand-rounded as, at .8. Adjacent the annular flange: the: rim

portion- 8 is providedawithttwo or :more open 'ings 9 arranged at rightangles to the pane of the lens front andiec ually spaced around the rimportionfadapted to receive attaching screws v '10 havingcountersunkheads. -These screws 10 have threaded engagement in openingsin the lamp housing flange 5 passing outside and adjacent'to the packingring or gasket 4. The flange 5 is provided withan offset adjacent themain body portion of the lamp housing'which forms therein an annularshoulder 11 adapted to receive and position the extremity of thelensflange 7. -It is to be' noted that the contour of the outer surface ofthe flange {conforms sub stantially to that of the body portionof thelamp housing with which it joins to present practically an,uninterrupted smooth exterior, surface. As will beapparent, the screws10 function to secure the lens tightly against the gasket 4 and. thereflector2 to the lamp housing 1. Any suitable interengaging elementsmay be provided to position the refiector'properly'with respect to thelamp housing, such as, for instance, providmg turned portions on theflange 5 to engage the inner wall of the reflector g'roove3, or pro,-viding bent out portions jonsaid groove passing through openings in thehousing 'flange 5.-

It will be noted that in'thestructure thus far 1 disclosed the gasket 4,flange 51' and adjacent partswould-be visible through the glass door orlens which would be unsightly. To obviate this objection, I have shownin Figure l the inner be inserted. 'In either event, there would beprovided: a means to-conceal the reflector groove and gasket and thehousingflange and offset portion, Y

' In the embodiment shown in Figure 2, I have provided a metal covering,13, which may be suitably finishedand serves to additionally eoncealthe portion of the attaching screws positioned in the lens.

outer curved surface of the rim po'rtionof the lens subsequent to thesecuringof the lens-to to-the clamp housing by the screws 1( The metalcovering 13 may be employed with or withoutv the mirrored surfacesuchasshown. in

Fi u e 1. T adva e nthe use of me al housing, and additional means soconstructed nd p s t oned a tiw n eal t sk t hou flange and offsettherein; 7

cove in is that o appearance lar l that suc v in ma b in sh o; corre o dwith the finish of the lamp housing, or ifdesired, finishedin somecontrasting effect relative there to. Noting Figure 2, if suchmetalcovering were extended inwardly" so as to completely conceal the gasket,it would interferewith=light diffusion through the lensand for'thatreason it. is, desirable to; terminate, the inner edge sgindicated. Then, if desired, the inner surface of the rim portion maybe mirrored, or. a piece ,of thin metal inserted, a,s a,t 14 between thelens and. gasket to completely conceal thelatter, but, f orthis purposeneed not be of the extentv of the meansshown in Figure 1. 1' Y 7 Insteadof either of the preceding'methods of concealing .the gasket andadjacent elements,

Tresort might be hadto painting either theinn'er or outer surface of therim portionof thejleni's.

I claimt.

v1, In alamp, the combinationwi-th a lamp, housing, of an annulargasket, a lens provided This metal covering 13 does not function in anymanneras-a clamping ring Y and may be applied in any manner'about thewith a. rim portion extending beyond the gasket, means to securesaidlens to said housing which does not entirely conceal said gasket,and a surface of said rim portion being mirrored to conceal said gasketwhich would otherwise be visible through the rim portion of said lens.

2. In a lamp, the combination with a lamp housing, of a reflector,-agasket mounted in said reflector, a lens engaging said gasket, screwspassing through said lens and engaging said housing for securing thelens tightly against the gasket, and means-to conceal the gasket, screwsand portions of the housing which would other wi e be visib e hroug SaidY 3. In a lamp, the combination of a lamp housing provided with aninwardly extending flange joining the body portion thereof in an'annularoifset,a reflector engaging said flange, a groove in said reflector andaga'sket seated in'said groove,

a lens extending beyond the gasket and provided w th an u a fla ge es tines i a f s means. securing said lens to the flange onthe 4.- amm e' Qin Q o a l mp r tsing provided with an 'annular ofiset at the open ndthe -0 le id d i h an u a e i rly rounded ang i: o. g in a d *offset,ineans securing said lens to said housing,

annular rearwardly extending flange g ositioned within said offset, theportion of said lens adjacent a flange b in o eat r thi kne ha thecentral portionthereof, andattaching means a sin h o h id ort q io reami knes a d en ag n sad sm-h usin to s u e th ens th eta. y

CLAREN E A- M HEL-

